Home / 3,890.46-5,834.35-1,257.29

Finding the Fourth Proportional to 3,890.46, 5,834.35 and 1,257.29

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Solution

The fourth proportional to 3,890.46, 5,834.35 and 1,257.29 is: 1,885.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.46 : 5,834.35 = 1,257.29 : x
  2. Step 2: Convert to fraction form
    3,890.46/5,834.35 = 1,257.29/x
  3. Step 3: Cross multiply
    3,890.46x = 5,834.35 × 1,257.29
  4. Step 4: Simplify right side
    3,890.46x = 7,335,457.12
  5. Step 5: Solve for x
    x = 7,335,457.12/3,890.46
  6. Step 6: Final answer
    x = 1,885.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.